baker



(No Model.) 2 Sheets-Sheet l.

W. R. RARRR.

` GGRD HOLDER FOR GRAIN BINDBRS. No. 324,353. Patented Aug. 18, 1885.

WITNESSES INVENTOR .By kie' dttorneys,

(No Model.) 2 Sheets-Sheet 2.

. y W. R. BAKER.

y GOED HOLDER FOR GRAIN BINDBRS. No. 324,353. Patented Aug. 18, 1885.

WITNESSES 8 lNvENToR Vz'ZZam 2.3606672 y M By` ttorney Q I l my m M N. PETERS. Fnotoiilhngmphcn washingwn, D. u

' UNITED STATES PATENT OFFICE..

WILLIAM R. BAKER, OF CHICAGO, ILLINOIS, ASSIGNOR TO THE MCCORMICK HARVESTING MACHINE COMPANY, SAME PLACE.

CORD-HOLDER FOR GRlN-BNDERS.

SPECIFICATION forming part ofLetters Patent No. 324,353,6lated August 18, '5.885,

Application filed April 18, 18%. (No model.)

T all whom, it may concern:

Be it known that I, WILLIAM R. BAKER, of Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Cord- Holders for Grain- Binders, of which the following is a specification.

Of late years a cord-holder has come into quite general use wherein one or more rotating disks work against or into a hinged and spring-pressed shoe, the periphery of the disk or disks being notched to receive the strands of the cord and to carry them against and jam or bend them upon or into the shoe. Upon the hub of the disks,which rotate concurrently and may be integral,is placed a ratchet-wheel, and a pawl is at the proper time operated by suitable mechanism-commonly a cam-track on the face or in the periphery of a revolving 2O wheel-to carry the disks forward one step or stage sufficient to take a fresh grasp upon the cord. In the course of time the point of the pawl or dog has, according to experience, become worn, and there is other wearing in the 2 5 various joints necessitated in the construction of the intermediate connecting mechanism, so that engagement does not certainly take place with the ratchet-teeth, and sometimes there is no operation of the holder to grasp the cord;

3o but. so far as I am aware, no provision has heretofore been made for remedying this, ex-

cept the'renewal of the worn parts. In what is perhaps at the present day the most widely used form of this holder, its supporting-frame 3 5 ispivoted to hangers from a rigid bracket, o `nd a roller upon the heel-extension.. of the frame follows a cam-track in the face of a wheel, the outline of which track is such that the holder is held stationary during a certain 4.0 interval corresponding with the accumulation and encirclingof the grain, and is then lifted towardl the knotter to yield up slack as this knotter revolves. A second track exterior to the first, and heretofore acting upon a slid- 4 5 ing bolt perpendicular to the face of the wheel,

has controlled the rotation of the holdingdisks. The various castings and pivots have so farbeen ladapted to this construction that it is undesirable to make any change necessitating alteration in them-at least in establishments of any magnitude and age. My purpose is, so far as possible, while preserving the general outlines of the frame, castings,

brackets,and supports of such a construction,

t0 reduce the wear by a reduction in the num- 55 ber of parts and pivotal points communicating motion from the cam to the holding-disks, and toprovide for taking up whatever inevitable wear may be still incurred by so constructing the cam-track that that bearing por- 6o tion of the track which corresponds with the actuation of the holding-disks may be adj usted to effect aniutermediate coacting mechanism, whatever that may be, to a greater extent in proportion as this fails to do its work properly from the original adjustment.

In the drawings, Figure lisa side elevation of a holder, hol der-frame, and actuating cam wheel or disk with parts broken away to more fully expose the mechanism. Fig. 2 is a bot- 7o tom plan view thereof; Fig. 3, a detail of the cam-disk apart from other mechanism; and Figs. 4 and 5 represent in sectional side elevation and top plan the application of my invention to a peripheral cam-track.y

A is a shaft located above the grain-chute if the binder-arm is pivoted below, or below said chute if the binder-arm is above, and usually intermittently rotated, such rotation tak-- ing place only when a gavel has accumulated 8c x and the mechanism starts to encircle and bind it. A cam wheel or disk, B, is keyed upon this shaft so as to revolve with it, and in its face has cam-grooves b b', the tracks in the present instance being in both grooves afford- 8 ed by the sides or walls thereof. l

Sleeved to the shaft on the grooved sideof the cam-wheel, or else projecting from one of the bearings of said shaft, is a bracket, C, having pendent ears or hangers c, to which are pivoted upright ears d from the holder-frame D. The latter has at its inner end an arm, D', carrying a pin or roller, d', which follows the inner cam-track, b, and swings the holderframe upon its pivots, as hereinbefore explained.

At the outer end of the frame is a notched disk, E, turning upon-a vertical pivot, e, and saddled by a shoe, F, pivoted at f to an arm or web of the frame, which is preferably and roo of necessity, at this point, of skeleton outline.

Aspring, f', clamped to a pendent lug from the frame or to any suitable part of said frame, forces the shoe in toward the disk,` and causes it to clamp or bend the cord thereover as the disk revolves.

Upon the hub ofthe disk, or upon its pivotpin if the two turn together as an integral piece, is a ratehetwheel, G, having inl the most approved form-that is, where each notch in the disk serves in turn to receive both strands of the cord, and the disk is consequently moved one notch to each impulse--j ust as many ratchet-teeth as there are notches.

Now, in order to rotate the holder-disk, I pivot to the holder-frame, at a point for best effect as nearly as possible perpendicular to the outer cam-groove, an elbow or bell-crank lever, H, one arm of which is provided with a roller, h, which takes into and follows said groove, and-the other arm has pivoted to it a paw] or dog, It. A curved rod is pin-jointed io the back of this pawl and enters a recess or bore through the adjacent arm ot' the lever, and about this rod is coiled a spring, which tends constantly to force the pawl away from the arm and into engagement with the ratchetwheel.

The cam groove b', which the roller h follows, is of such shape and relation to the part it is to operate that when the roller is at the point in the cam-groove the pawl has fallen behind one of the ratchet-teeth, and thc disk has been for some time and is still at rest. From i to i' there is what may be termed a rise in the track, which throws the bell-crank lever forward on its pivot, pushing the pawl against the ratchettooth, and causing the holder-disk to revolve to bring the next notch in position for the re- 'ception of the subsequent strands of cord. At

the point t" the movement of the disk ceases, and it is retained against retrograde motion by means ot a spring-catch, i2, which drops behind one of the ratchet-teeth. From the point i to the point t'. the track is upon an inward spiral, gradually withdrawing the bellcrank lever and pawl until the latter drops behind the next tooth and is again in position for action. The effective labor, it will be noticed, is between the point i and ii, and especallyin the last half of this portion; and if there is any shortcoming, due to wear or other defect, it will be felt while the roller is passing over this part of the track. Therefore, as suggested in the preamble, I propose toinsert an adjustable section at this point, that can be 'moved out to insure a proper throw to the bell-crank lever to take up such deficiency. A simple way of doing this is as follows: A portion of the track is removed corresponding` lo this effective length, and in its place is in serted a section, K, pivoted at lc, or at the end against which the roller will first come, so as to be flush as to its outer surface with the adjacent portion of the fixed track at that point and afford no obstacle to the roller as it reaches it. At the other end, also, it shuts in, so as to be iinsh with that portion of the fixed track track.

contiguous at said end. At a suitable point- Say at this free end-it has pin jointed to it a short screw threaded rod, k', which passes through lugs k2 on the face of the disk, and receives between such lugs a nut, k, whereby it can be adjusted in orout to close this hinged section entirely flush withthe adjacent portions of the fixed track, orto raise it relatively thereto, between the hinge and its free end. As such outward displacement will throw the roller on the elbow-lever toward the opposite wall of the cani-groove, such wall is given an outward bulge along this portion sufficient to accommodate any anticipated range of adjustnient.

I have described but a single form of cam- It will be understood, however, that the track, instead of being, as here, perpendicular to the plane of the disk, may be laid upon its periphery, that portion of the track which causes the effective action ot' the lever or other instru mentality moving the cordholder being made adjustable according to the principle explained. One mode of such application is indicated in the last two figures of the drawings. The holder-frame is pivoted upon a plunger-bolt, I'I, having a lateral arm, to which is pivoted the dog 7i', pressed toward the ratchet on the holder-disk by aspring encircling a curved guide-rod playing through the arm and hinged to the dog, as before. A roller, h2, from the end of the plunger-bolt cnters the peripheral cam-track l upon the disk, and is acted upon by the hinged adjustable section K, to project the bolt and cause the dog to turn the holder-disk. From the end of this section the camway retreats until it has withdrawn the roller and bolt to their starting position, setting the dog for the next im pulse, when it becomes straight, and so continues to the foot of the adjustable section.

I do not limit my invention to the particular form of the Cain-track or to its location, nor do I limit said invention to use with a rising and falling cord-holder so far as the adjustable feature of the cam-track is concerned since it may be with equally relative benetit used where the nature of the machine demands a stationary holder.

I claiml. `The combination, with a cord holder,of an actuating-lever and a cam-track controlling said lever having an adjustable section corresponding with the effective portion of its' track in the impelling movement of the lever, whereby loss by wear may be compensated for.

2. The combination, substantially as hereinbefore set forth, of the holder-disk,a springpressed shoe therefor, a ratchet-Wheel upon the hu-b or pivot of said disk, a driving-pawl, a cam-track upon a rotating wheel, mechanism intermediate between said pawl and track,and an adj ustable section in said track, which causes the impelling movement of the pawl, and whereby wear may be compensated for and the point of the pawl always brought to the same position in its stroke.

IOO

IIO

The combination,substantially as hereinbefore set forth, of the holder-disk, its shoe and ratchet-wheel, the pawl engaging with said ratchet-wheel,the bell-crank lever to which said paw] is pivoted, the coiled spring between the pawl and bell-crank lever, the cam-track receivnga roller from the adjacent arm of the bell-crank lever, and the adjnsta-H 5.- The combination, substantially as hereiubefore set forth, with the cam-track controlling the instrumentalities for revolving the holderdisk, of the hinged section flush with the fixed portion of the track at its hinged end, and at the opposite end having a screwrod pin-jointed thereto, which rod takes through stationary lugs on the face of the caniwheel and receives between such lugs a nut for its adjustment.

V6. The combination',substantially as hereinbefore set forth, of the pivoted holder-frame, its vertical arm, the cam-groove in the face of the revolving wheel, into which ay roller from said arm takes, the holder-disk pivoted in said frame, the bell-crank lever and pawl for operating said disk, and a second cam-groove in the face of the revolving wheel ciroumscribing the first, into which a roller from the adjacent arxn of the bell-crank lever takes, whereby the holderframe is raised and lowered, and the cord-holder operated bythe revolutions of the wheel.

VILLIAM R. BAKER.

Witnesses:

S. (13A. HoLTH, JOHN V. A. HAsBRooK. 

